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(Last Modified On 11/12/2012)
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(Last Modified On 11/12/2012)
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Genus
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NECTANDRA Rollander
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PlaceOfPublication
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Acta Univ. Hafn. 1:267. 1778.
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Description
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Evergreen trees or shrubs. Leaves alternate, or occasionally subopposite, the blades. penninerved. Inflorescence axillary and/or subterminal, usually paniculate. Flowers perfect, pedicellate. Perianth-tube -conspicuous or lacking. Perianth- lobes usually fleshy and reflexed or spreading at anthesis, usually deciduous. Stamens of the two outer series fleshy, petaloid, papillose and ovate, or quadrate or orbicular with conspicuous connective tissue, or reniform or subreniform, fre- quently emarginate, with no apparent connective tissue, the cells occupying the entire anther. Anthers sessile or borne on filaments, with four introrse cells usually arranged in an arc-like formation, which only rarely is obscure. Stamens of inner or third series usually quadrate; in flowers bearing petaloid outer series, the inner also sometimes fleshy and papillose with truncate connectives; in other cases, the inner not fleshy nor papillose and the connectives inconspicuous. Four cells ar- ranged in two horizontal planes; those of the upper plane lateral or laterally extrorse; those of the lower plane usually extrorse. Staminodia when present, for the most part, stipe-like. Gynaecium completely glabrous except in N. reticulata; ovary subglobose or ovoid, rarely ellipsoid; style usually short; stigma conspicuous, discoid or subcapitate, triangular or occasionally triangular-peltate, often decur- rent. Fruit usually ellipsoid or subglobose, occasionally oblong or obovoid, borne in a cupule with simple margin occasionally bearing remnants of the perianth- lobes, uniformly subtended by enlarged pedicel.
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Habit
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trees shrubs
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Note
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Nectandra consists roughly of 175 recognized species, 125 of which are to be found in South America, about 34 in Mexico and Central America, and the re- mainder in the West Indies. Good timber for carpentry and general construction locally.
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Key
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a. Leaf-blades not recurved at all at the base or decurrent, not auriculate nor cordate nor even rounded at the base generally. b. Largest leaf-blades never more than 8 cm. long. c. Largest leaf-blades up to 7 cm. long and 2.2 cm. broad, lanceo- late or elliptic-lanceolate, varnished-shining above, the reticulation somewhat obscure ......................................................... 1. N. DAVIDSONIANA cc. Largest leaf-blades up to 8 cm. long and 3-4 cm. broad, elliptic, not varnished-shining above, the reticulation very conspicuous ...... 2. N. SMITHII bb. Largest leaf-blades never less than 9-10 cm. long. c. Anthers of the two outer series of stamens fleshy, petaloid, papil- lose, never emarginate, the upper third consisting of connective tissue, the remaining space occupied by the cells. d. Leaf-blades pale green, usually with the venation and reticula- tion showing yellowish, often with large ellipsoid axillary pubes- cent glands on the lower surface, but conspicuous on both surfaces ...................................... -. ....... 3. N. P A NAMENSIS dd. Leaf-blades not pale green with conspicuous whitish venation and reticulation; axillary glands, if present, rather incon- spicuous. e. Branchlets, leaf-blades, petioles and inflorescences ferruginous- tomentose or ferruginous-tomentellous. f. Leaves alternate, the blades elliptic or ovate, the base ob- tuse, coriaceous, densely tomentose beneath ............................ 4. N. LAUREL ff. Leaves opposite usually, the blades lanceolate or elliptic, the base acute, rigidly coriaceous, tomentellous beneath ...... 5. N. RIGIDA ee. Branchlets, leaf-blades, petioles and inflorescences not fer- ruginous-tomentose or ferruginous-tomentellous. f. Leaf-blades with lateral nerves 8-12 pairs ............................ 6. N. GLOBOSA ff. Leaf-blades with lateral nerves 4-5 (-7) pairs -------------------- 7. N. RAMONENSIS cc. Anthers of the two outer series of stamens not fleshy, petaloid, or papillose, but quadrate or reniform, subreniform or suborbicular, and frequently emarginate, the cells occupying the entire anther. d. Greatest width of leaf-blades at or below the middle, the blade tapering towards the apex only ----------------------------.-....-........----8. N. GENTLEI dd. Greatest width of leaf-blades exactly at the middle or the blade tapering towards the base and the apex equally, or the leaf- blades obovate. e. Largest leaf-blades not less than 7 cm. broad ---------------------------- 9. N. WOODSONIANA ee. Largest leaf-blades not more than 6.5 cm. broad, usually less than 5 cm. f. Inflorescence usually glabrous; branchlets glabrous or minutely and sparsely pubescent becoming glabrous. g. Leaf-blades not caudate-acuminate at the apex - .-.--10. N. SALICINA gg. Leaf-blades caudate-acuminate at the apex -1. N. FUSCOBARBATA ff. Inflorescence variously pubescent; branchlets early densely and minutely golden- or subferruginous-tomentose or seri- ceous, later becoming glabrescent to glabrous. g. Reticulation loose, scarcely apparent on the upper sur- face of the leaf-blades ..........................................-......... .. 12. N. NITIDA gg. Reticulation minute, exceedingly prominent throughout.. 1 3. N. LATWOLIA aa. Leaf-blades recurved at the base and decurrent, or auriculate and re- curved, or cordate and recurved. b. Base of leaf-blades decurrent and recurved, not auriculate. c. Petioles not thickened or lengthened by decurrent leaf-blades; leaf-blades only slightly decurrent at the base and very slightly recurved for less than 5 mm. d. Anthers more or less ovate, obtuse, with fleshy, papillose con- nectives; fruit ellipsoid or globose. e. Leaf-blades with lateral nerves 8-12 pairs ............... 6. N. GLOBOSA ee. Leaf-blades with lateral nerves 4-6 (-7) pairs .......................... 7. N. RAMONENSIS dd. Anthers subreniform, subemarginate; fruit usually globose. e. Leaf-blades chartaceous, lanceolate, the greatest width at or below the middle, the blade tapering towards the apex only . 8. N. GENTLEI ee. Leaf-blades coriaceous, elliptic, the greatest width exactly at the middle, the blade tapering towards the base and the apex equally, or rarely obovate ........................................... 14. N. STANDLEYS cc. Petioles variously thickened and seemingly lengthened by decur- rent leaf-blades; leaf-blades conspicuously decurrent and recurved at the base up to 4-5 cm. d. Largest leaf-blades not more than 3.5 (-4) cm. broad l 15. N. WHITEi dd. Largest leaf-blades not less than 5 cm. broad, usually more than 6 cm. e. Leaf-blades usually shining above, and heavily reticulate; anthers ovate, the connective tissue comprising the upper 'A4-Y2; stigma borne on a well-defined style; cupule and pedicel to 2.5 cm. long ...............1..................... ...... 16. N. HYPOGLAUCA ee. Leaf-blades not shining, inconspicuously reticulate above; anthers subreniform (or depressed-globose), the cells occupy- ing the entire anther; stigma subsessile; cupule and pedicel 1.8 cm. long ..............................1................................................... l7. N. PAULII bb. Base of leaf-blades definitely auriculate and recurved, the recurved aunicles often overlapping conspicuously beneath ............1 8. N. RETICULATA
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